org.eclipse.equinox.jmx.internal.client.ui.contributionsview.ContributionLabelProvider.java Source code

Introduction

Here is the source code for org.eclipse.equinox.jmx.internal.client.ui.contributionsview.ContributionLabelProvider.java

Source

/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.equinox.jmx.internal.client.ui.contributionsview;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import javax.management.MBeanInfo;
import javax.management.MBeanOperationInfo;
import org.eclipse.equinox.jmx.common.ContributionProxy;
import org.eclipse.equinox.jmx.common.ContributionProxyMBean;
import org.eclipse.equinox.jmx.common.util.ByteArrayHolder;
import org.eclipse.equinox.jmx.internal.client.Activator;
import org.eclipse.equinox.jmx.internal.client.ui.util.ByteImageRegistry;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.graphics.Image;

/**
 * @since 1.0
 */
public class ContributionLabelProvider implements ILabelProvider {

    private ArrayList labelDecorators;
    private BundleStatusLabelDecorator bundleStatusDecorator = new BundleStatusLabelDecorator();
    private ByteImageRegistry imageRegistry = new ByteImageRegistry();

    public ContributionLabelProvider() {
        addLabelDecorator(bundleStatusDecorator);
    }

    /**
     * Add a decorator to this label provider.
     */
    public void addLabelDecorator(ILabelDecorator decorator) {
        if (labelDecorators == null) {
            labelDecorators = new ArrayList(2);
        }
        labelDecorators.add(decorator);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
     */
    public Image getImage(Object element) {
        if (element instanceof ContributionProxy) {
            ByteArrayHolder holder = ((ContributionProxy) element).getImageData();
            byte[] imageData;
            if (holder != null && (imageData = holder.value) != null) {
                try {
                    return decorateImage(imageRegistry.getImage(imageData), element);
                } catch (IOException e) {
                    Activator.log(e);
                }
            }
        }
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
     */
    public String getText(Object element) {
        if (element instanceof ContributionProxyMBean) {
            return decorateText(((ContributionProxyMBean) element).getName(), element);
        } else if (element instanceof MBeanInfo) {
            return decorateText(ContributionViewMessages.operations, element);
        } else if (element instanceof MBeanOperationInfo) {
            return ((MBeanOperationInfo) element).getName();
        }
        return decorateText(element.toString(), element);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
     */
    public void addListener(ILabelProviderListener listener) {
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
     */
    public void dispose() {
        imageRegistry.dispose();
        labelDecorators.clear();
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
     */
    public boolean isLabelProperty(Object element, String property) {
        return false;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
     */
    public void removeListener(ILabelProviderListener listener) {
    }

    protected String decorateText(String text, Object element) {
        if (labelDecorators != null && text.length() > 0) {
            Iterator iter = labelDecorators.iterator();
            while (iter.hasNext()) {
                ILabelDecorator decorator = (ILabelDecorator) iter.next();
                text = decorator.decorateText(text, element);
            }
        }
        return text;
    }

    protected Image decorateImage(Image image, Object element) {
        if (labelDecorators != null && image != null) {
            Iterator iter = labelDecorators.iterator();
            while (iter.hasNext()) {
                ILabelDecorator decorator = (ILabelDecorator) iter.next();
                image = decorator.decorateImage(image, element);
            }
        }
        return image;
    }
}